Anyone happen to know the correct tap size for an original Springfield tumbler hammer screw hole thread..thanks
Anyone happen to know the correct tap size for an original Springfield tumbler hammer screw hole thread..thanks
It is a 3/16-26 Whitworth. A #10-26 is very close and will work.
Here is a related post by Al Frasca from the Trapdoor Springfield BB.
The tap and die you are looking for is 26 TPI 3/16" and Whitworth pitch. Tracy tools has them and so does an American company called Besly Cutting tools. If you get the set for most of the threads on a trapdoor, get the 5/32" 26TPI , the 3/16" 26 TPI and the 7/32" 26 TPI and you will have everything for the trapdoor except the tang bolt.
Thanks for the info...jim
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